Bottrell, H.H., Robinson, D.B. 1984.
Seasonal variations in length, dry weight, carbon and nitrogen of Calanus helgolandicus from the Celtic Sea.
Marine Ecology Progress Series 14: 259-268.
Williams, R.L., Robinson, D.B. 1982.
Effects of preservation on wet weight, dry weight, nitrogen and carbon contents of Calanus helgolanidicus (Crustacea: Copepoda).
Marine Biology 71, 271-281.